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/*
* tap.c - Proxy interface specific code in diald.
* The proxy interface is used to monitor packets
* when the physical link is down.
*
* Copyright (c) 1999 Mike Jagdis.
* All rights reserved. Please see the file LICENSE which should be
* distributed with this software for terms of use.
*/
#include "diald.h"
int
send_packet(unsigned short wprot, unsigned char *p, size_t len)
{
if (proxy.send)
return proxy.send(&proxy, wprot, p, len);
errno = -ENOSYS;
return -1;
}
int
recv_packet(unsigned char *p, size_t len)
{
return (proxy.recv
? proxy.recv(&proxy, p, len)
: 0);
}
void
proxy_start()
{
if (proxy.start)
proxy.start(&proxy);
}
void
proxy_stop()
{
if (proxy.stop)
proxy.stop(&proxy);
}
void
proxy_close()
{
if (proxy.close)
proxy.close(&proxy);
}
void
proxy_release()
{
if (proxy.release)
proxy.release(&proxy);
}
int
proxy_init(proxy_t *proxy, char *proxydev)
{
int fd;
proxy->ifunit = -1;
proxy->send = NULL;
proxy->recv = NULL;
proxy->init = NULL;
proxy->start = NULL;
proxy->stop = NULL;
proxy->close = NULL;
proxy->release = NULL;
if (proxydev) {
if (!strcmp(proxydev, "none"))
return 0;
return proxy_dev_init(proxy, proxydev);
}
#ifdef AF_NETLINK
if ((fd = proxy_tap_init(proxy, NULL)) >= 0)
return fd;
#endif
if ((fd = proxy_slip_init(proxy, NULL)) >= 0)
return fd;
mon_syslog(LOG_ERR, "Unable to get a proxy interface."
" Manual control only.");
return -1;
}
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